# Building procedures
Do you need a building permit, proof of residence or a demolition permit? Do you want to determine the market value of a property or do you need an energy performance certificate? Here you will find services and contacts at public authorities regarding building procedures.To Services
Information about Rights & Duties
Do you have cause for complaint after a train, bus or ship journey? Then you can contact the Federal Railway Authority (EBA).
If you wish to participate in aeronautical and aeronautical navigation radio, the BNetzA will assign you the callsign with the Aircraft Station Licence on application. In addition, you must notify changes, for example, the holder address or the radio technical equipment.
If you export plants, plant products or other objects to countries outside the EU, they must not contain any harmful organisms. As proof of this, you must apply for a phytosanitary certificate or a pre-export certificate or re-export certificate.
If you want to buy and sell firearms or ammunition on a commercial basis, you need a firearms dealer's license.
The Federal Network Agency allocates numbers for recreational and commercial shipping in the form of a Ship Station License upon application. You must also notify certain changes.